Motor vehicle

Abstract

A drive unit including an engine and steerable wheels, is pivotally connected to the forward end of a chassis, including a body and ground support wheels. A pair of struts movably mounted to the chassis, equilaterally outboard and above the pivotal connection, extend downwardly inward to the drive unit and are movably affixed. In response to the natural tilt of the chassis while transversing a corner, weight is transferred through the struts to equalize traction upon the steerable wheels.

Having fully described and disclosed the invention in such clear and concise terms as to enbale those skilled in the art to understand and practice the same, the invention claimed is: 
     
       1. A vehicle for self-propelled travel over the ground and for increased efficiency while executing an inherently unstable maneuver such as turning, said vehicle comprising: a. a chassis having a forward end including i. a body, and   ii. wheel means for supporting said body above the ground;     b. a drive unit having a forward end and a rearward end and including: i. a pair of laterally spaced steerable wheels for contacting the ground, said steerable wheels having a normal axis of rotation and   ii. power means for imparting rotation to at least one of said pair of steerable wheels; and     c. coupling means for securing said drive unit to said chassis and for substantially equalizing the contribution of each of said pair of steerable wheels in directing and propelling said vehicle, said coupling means including; i. connection means pivotally joining said drive unit to said chassis forwardly of said body;   ii. a first strut laterally spaced from said connection means and extending between said chassis and said drive unit;   iii. a second strut laterally spaced from said connection means in a direction opposite from said lateral spacing of said first strut and extending between said chassis and said drive unit, each said strut having a first end movably affixed to said chassis and a second end movably affixed to said drive unit, the second end of each of said struts being affixed to said drive unit at a location spaced above and forward of the normal axis of rotation of said pair of steerable wheels.     
     
     
       2. The vehicle of claim 1, wherein said connection means pivotally joins said drive unit to said chassis for relative rotation about a substantially vertical axis. 
     
     
       3. The vehicle of claim 2, wherein said connection means further pivotally joins said drive unit to said chassis for relative rotation about a substantially horizontal axis. 
     
     
       4. The vehicle of claim 3, wherein said connection means includes: a. a first tongue extending rearwardly from said drive unit and having a bore therethrough;   b. a second tongue extending forwardly from said chassis and having a bore therethrough; and   c. a pin extending through each of said bores.   
     
     
       5. The vehicle of claim 3, wherein said connection means includes a ball and socket joint. 
     
     
       6. The vehicle of claim 1, wherein the first end of each of said struts resides at a location above and outboard of the respective second end when said vehicle is traveling in a substantially straight path. 
     
     
       7. The vehicle of claim 6, wherein said connection means resides at an intermediate lateral location with respect to said chassis and said drive unit. 
     
     
       8. The vehicle of claim 7, wherein said intermediate lateral location resides below the normal axis of rotation of said pair of steerable wheels. 
     
     
       9. A vehicle for self-propelled travel over the ground and for increased efficiency while executing an inherently unstable maneuver such as turning, said vehicle comprising: a. a chassis having a forward end including i. a body, and   ii. wheel means for supporting said body above the ground;     b. a drive unit having a forward end and a rearward end and including i. a pair of laterally spaced steerable wheels for contacting the ground, said steerable wheels having a normal axis of rotation and   ii. power means for imparting rotation to at least one of said pair of steerable wheels; and     c. coupling means for securing said drive unit to said chassis and for substantially equalizing the contribution of each of said pair of steerable wheels in directing and propelling said vehicle, said coupling means including: i. connection means pivotally joining said drive unit to said chassis forwardly of said body;   ii. a first strut laterally spaced from said connection means and extending between said chassis and said drive units; and   iii. a second strut laterally spaced from said connection means in a direction opposite from the lateral spacing of said first strut and extending between said chassis and said drive unit, each said strut having a first end movably affixed to said chassis and a second end movably affixed to said drive unit, wherein:     d. said connection means join the rearward end of said drive unit to the forward end of said chassis at an intermediate lateral location with respect to said vehicle;   e. the first ends of said struts are affixed to the forward end of said chassis at respective location spaced equilaterally outboard and above the location of said connection means; and   f. the second end of said struts are affixed to said drive unit at respective locations spaced equilaterally outboard and above the location of said connection means, each of said struts normally projecting downwardly inward in a direction from said chassis towards said drive unit and wherein the location at which each of the second ends of said struts are affixed to said drive unit resides closer to the forward end of said drive unit than the rearward end of said drive unit.   
     
     
       10. The vehicle of claim 9, wherein: a. the location of said connection means is below the normal axis of rotation of said steerable wheels; and   b. the location of each of the ends of said struts is above the normal axis of rotation of said pair of steerable wheels.